Radiographic weather code for vessel weather observers.
Publisher: Govt. print. off.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 31
Subjects: Cipher and telegraph codes -- Meteorology.; Weather telegraphy.
Notes: At head of title: W.B. no. 731. U.S. Department of agriculture. Weather bureau. Charles F. Marvin, chief.